Sub-machine gun



Aug. l, i939. L. N. NoMAR v 2,167,672

SUBMACHINE 'GUN Filed July 23, 1937 Aug. 1', 1939. L. N. NOMARSUB-MACHINE GUN Filed July 25, .1937 '7 Sheets-Sheet. 2

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' @www Aug. l, i939. NI NOMAR. SUB-MACHINE GUN Filed July 2s,- 1957 7sheets-sheet 4 Aug. 1, 1939. L N. NOMAR SUB-MACHINE'GUN Filed July 23,1937 -7 Sheets-Sheet-5 Filed July-23r 1937 '7 Sheets-Sheet 7 KWS ww@gmc/wm 40 l the action of a means which acts to normally- Patented Aug.1339 n hit :SUB-mom GUN Louis Nolan Nomar, Charleston, W. Va.Application .my ze, 1937, serial No. 155,337

14 Claims.

This invention relates to a gun of the submachine type.

The invention aims to provide, in a manner as hereinafter set forth,'agun pf the class referred to including means whereby automatic rapidfiring is obtained.

The invention further aims to provide, in a manner as hereinafter setforth, 'a gun of the class referred to so constructed and arranged as toprovide forl rapid automatic loading from the stock thereof.

'I'he invention further aims to provide, in a manner as hereinafter'setforth, a gun of the class referred to including means to prevent thejammingthereof when operated.

The invention further ,aimsv to provide, in a manner as hereinafter setforth, a gun of the class referred to so constructed and arranged forfiring cartridges at the rate of twenty-eight hundred 20' per minute. r

A furtherobject of the invention is to provide,

ina manner as hereinafter set forth, a gun of the.

class referred to having the elements -thereof so arranged forreducingfrictional 'heat `to a 25 minimum.

A further object of the invention is to provide,

in a manner as hereinafter set `forthfa gun of` the class referred to soconstructed and arranged whereby the barrel, 4breech-block carrier, andbreech block move rearwardlyin unison for a part ofrthe impulse due torecoil'when the, explosion occurs and whereby the breech block movesrearwardlyindependently of the barrel and `carrier for the remaining4part of the impulse against propel the breech block forwardly and withsaid means becoming active on the discharge of the bullet. 1

A further object of the invention isto provide, in a manner ashereinafter set forth, a' gun`of the class referred to so constructedand arranged to provide for the barrel moving rearwardly on the instantofl explosion and for `automatically moving the barrel to ring positionon the instant of discharge.

The invention further aims to'provide,1 in a manner :is-hereinafter setforth, a gun of the class referred -to soconstructed and'arranged tomami-m the Pressure Produce@ at the instaat of for the bullet are notreduced.

'the lock-block element,

(ci. 42o-i) l explosion until the bullet has left the barrel whereby thepenetrating -eifect or distance of and The invention further aims toprovide, in a manner 'as hereinafter set forth, a gun of the classreferred to which is comparatively'simple in itsconstruction',andarrangemenit strong, durable, compact, thoroughlyefcient for the purpose intended thereby, readily assembled, automaticin its operation, provides for rapidity of ring, readily repaired whenoccasion requires and comparatively inexpensive to manufacture.

To the above ends essentially and to others which may hereinafterappear, the invention consists of the novelconstruction, combination andarrangement of parts as will be more specifically referred to and asillustrated in the accompanying drawings wherein is shown an embodimentof the invention, but it is to be understood that changes, `variationsand modications may be resorted to4 which fall within the scope of theinvention as claimed.

' In the drawings: ,n

Figure 1 is a side elevation of the gun,

FigureZ is a fragmentarynview ofthe gun in rear elevation,

Figure 3 is aA section on line 3 3, Figure 2, Figure 4 isA a.fragmentary view of the Agun in .top plan,

Figure 5 isa section on linel 5 5, Figure 2, Figure 6 is a section online 6 6, Figure 5, Figure 7 is an inverted plan View of the breech,Figure 8 is a section onv the line 5 5, Figure 2 Iand showing the partsas they would appear Figure 10 is a section on line lll-I0, Figure 4,

Figure 11 is an inverted view in perspective of the lock-block element,

Figure 12 is a section on line i2 |2, Figure. 11 when reversed withrespect to the position of the lock-block element shown in Figur 1,

Figure 13 is a fragmentary view in perspective of the sear latchingmember forming a part of Figure 14 is a perspectiveview of the trigger lyoke,

of the nger l ring pin and hammer element,

Figure 18 is an inverted plan view of the coni- Figure 23 is a sectiononline 29-29, Figure 22, l

Figure 24 is a topvplan view of the element shown in Figure 21, f

l Figure 25 is a side elevation of the latching member for and carriedby' the element shown in Figure 21,

Figure 26 is a top shown in Figure 25,

Figures 27, 28 and 29are respectively a front, a side and a rearelevation of the sear releasing element,

Figure 30 is a section on line 99-99, Figure 28, Figures 31, 32 and 33are respectively a side elevation, a rear elevation and a frontelevation of the member for locking the element shown in Figure 21 tothe gun stock,

Figure 34 is a section on line 94-94, Figure 3, Figure 35 is a sectionon line 95--95, Figure 1, Figure 36 is a top plan view of the head ofthe gun stock,

plan view 'of the member The carrier I includes a pair of spacedparallel y wall I9. The parts I1, I9 extend from the inner Figure 37 isa vertical lengthwise section on line 91-91, Figure 36,

Figure 38 is a transverse section on line y99--99, Figure 36,

Figure 39 is a transverse section on line 99-99, Figure 36,

Figure 40 is atransverse section on line 49-40, Figure 36, and

Figure 41 is a section on line 4I-4I, Figure 3.

The gun includes a hollow carrier I (Figure 4) which may be termed ahousing, frame or body part. The carrier I is an integral casting havingan open rear end whichis closed by a meansto be referred to. The carrierI is substantially rectangular in plan and includes a top 2 formedlengthwise and centrally thereof and intermediate its ends with arectangular opening 9. The top 2 is valso formed with a central opening5 at its rear end, Aa rear arch-shaped portion 9 which constitutes theforward end wall of opening and the rear end wall of opening 9. The top2 also includes a front arch-shaped'portion 1 which i'ormsI the forwardend wall of opening 9. The portions 9, 1 also constitute coupling piecesfor a purpose t'o be referred to. The bottom'of carrier Itis indicatedat 9 (Figure '7) and it is formed centrally thereof with an opening 9which extends from a point rearwardly of its front to its rear end.'I'he forward wall of opening 9, indicated`at 9', has a curved portion9'. 'I'heA front end of carrier I (Figure 5) is in the form of a wallIUintegral with the -portion 1. The wall I9 `that of opening II.

is vformed centrally thereof with an opening II face of wall III to apoint in proximity to the open rear end of the carrier.' The inner facesI9*` of the parts I1, I9 form flush continuations of the side walls ofopening 9. The parts I1, I9

are of like form and their rear ends constitute shoulders. The parts I1,I9 are formed with' cylindrical openings I9, 29 respectively and withsquared passages 2I, 22 respectively. The openings I9, 2,0 and passages2|, 22 extend from the forward to the rear ends of the parts I'I, I9.The passages 2|, 22 open at the inner faces I9* of the parts I1, I9 andcommunicate with the openings I9, 29 at the inner sides of these latter(Figure 10). The openings I2, I9 communicate with the forward ends ofthe openings I9, 29 respectively. The forward ends of the passages 2|,22 are closed by the wall 9. The bottom 9 (Figures 'I and 10) isprovided lengthwise thereof with oppositely disposed dependingangle-shaped flanges 29, 24 having the inner faces of their verticallegs flush with the walls of th'e opening 9. The flanges 29, 24 extendfrom the forward to the rear end of bottom 9. The lower face of theextension I4 forms a continuation of bottom 9 andthe sides of theextension` I4 are provided from end to end thereof. with outwardlyopening channels 25, 26 which form flush continuations 4of the channels29, 24. The purpose of the channels on bottom 9 and extension I4 will behereinafter set'forth. The bottom of extension I4 has a boss 29*(Figures 3 and 9) which carries a depending locking pin 2 for a purposeto be referred to. That portion of pin 21 below boss 26a is formed withsuperposed spaced flanges 21', 21h.

. Arranged within the openings I9,.2II are a pair of shiftable combinedguide and supporting memv bers 29, 29 respectively having forwardtubular continuation of the wall of opening 99.

` diametricallyV opposed slots 99.

'Ihe rearend of carrier I his closed by a slidable rear bridge element94 which is inserted in the carrier and abuts against the shouldersprovided 'by the rear ends of parts I1, I9. The element 94 is formedwith a pair of aligned openings 95 for receiving the reduced/ terminalparts 92' of;I the portions 9I of members 29, 29. The element 94 isformed with an axial opening 99, and an internally threaded collar 91forming an outward The outer face of element 94 at each side of collar91 is recessedas at 99. The intermediatepart 99 of element 94 is formedwith a depending angleshaped lug 49 which aligns with opening 99 andincludes a forwardly extending transversely apcollar 91 and isdetachably anchored to the inter- `41 (Figures 3 and 9). outer stretch48, an intermediate stretch 49 and mediate part 39 by a headed screw 44engaging with the threads of collar 31. The inner face of knob 43 has anannular shoulder 45 aligning with the outer end edges of collar 31. Whenthe screw 44 is in securing position the head 45a thereof abuts theouter end edge of collar 31 and shoulder 45 (Figure 5). The members 28,29 andlelement 34 form what may be termed a combined breech block guideand carrier having' associated therewith controlling Asprings to bepresently .referred to.

TheA barrel of the gun is indicated at 46 and which is rified internallyfrom its outer to a point removed from\its inner end, as indicated atThe barrel 46 includes an an inner stretch 58. The stretch 48 is ofgreater outer diameter than the other stretches and pro-f vided withspaced laterally disposed annular radiating ns I. Thestretch 49 at itsinner end is formed with an annular peripheral shoulder 52. The stretch50 for a portion of the length of its outer periphery is threaded, asat' 53. The stretch 50 is formed of two different inner diameters. Theportion 54 of smallest inner diameter of 'stretch 50 corresponds to theinner diameter of stretch 49, and is of less length than and arrangedforwardly of the portion 55 of largest inner diameter of stretch 50. Thejunction of 'the portions 54,55- provides the stretch 58 with aninternal ann lar shoulder 56. The stretch 58 is of a length o correspondto the combined length of the walls of and is positioned vinthe openingsII, I5 (Figure 5). The threads 58 of stretch 58 coact with the threadsI6 of extension I4 for securing the barrel 46 with the front of carrierI. v When barrel 46 is secured with carrier I, the shoulder 52 abutsagainst the front of extension I4 (Figures 3, 8 and 9) and the inner endof stretch 58 is iiush with the inner end of the beveled portion 51(Figure 9) formed at the inner end of the wall of the opening II. Thestretch 58 is locked to extension I4 by the pin 21 (Figure 3).

The gun includes a spring controlled manually slidable mechanism 58which coacts with other'l parts of the gun when the latter is not activeto provide for initially loadingthe gun, after which 63, 64 disposedat,`spaced from and extending above the sides of the barrel 46. Fixed tothel upper ends of the sides 68, 64 of the plate 62 are rearwardlyextending parallel' loading rods 65,

' .66 respectively which extend through the openings I 2, I3 in wall IIJandinto the tubular portions 38 of the members 28, 29 respective1y.- Therods I65,v 66 coactgwith parts, to be referred to, of the gun for thepurpose of initially loading the latter. The' hand grip 6| isformedrespectively with a groove lengthwise throughout its upper-- face,as at 61 (Figures 34 and 41), below ande of greater length than that ofhand grip 6Ikis a tubular member 12 having a slot 13 in its top adjacentits forward end for the passage of coupler 69 and a pair of alignedslots 14 in and lengthwise of its sides, for a purpose to be referredto. The member 12 is formed of a forward stretch 15 and a rear, stretch16. The stretch 15 is of greater inner diameter and of greater lengththan stretch 16. The forward end of theA latter provides anl internalannular shoulder 11 within the member 12. The slot 18 is disposedlongitudinally of stretch 15. The slots 14 are formed in stretch 16. Therear end of stretch 16 has its top reduced to form a shoulder 18 and itstop is also cut out, as at 19 to provide a clearance for a purpose to bereferred to. Slidably mounted in stretch 15 is a cup-shaped plunger 88open at its rear end. Arranged within plunger 88 and extending from theopen end of the latter to the shoulder 11 is a controlling spring 8i forthe plunger. Slidably mounted in the opening 1I, formed in the st em ofcoupler 69, is a piston rod 82 provided at its rear end with a pistonhead 83. The rear end of member 12 is closed -by a flanged cap piece8,4. A pin or stud indicated at 85 is employed for anchoring member 12,piston rod 82 and cap piece 84 together rearwardly of stem 18 of thecoupler 69. Arranged in the member 12, surrounding rod 82 and interposedbetween stem 18and piston head 83 is a cushioning spring 86. The rod 82,head 83, spring 86 and stem 18 coact to provide a shock-absorbing meansfor the return movement of the hand grip 6I. 'Ihe rear end of thestretch 16 of the member 12 is mounted in a socket 81 formed'in the stock structure 60. The shoulder 18 abuts the. forward end of boss 2liaand the cutout 19 forms a clearance for the lock-pin 211 and permits ofthe flange 21D of the latter being arranged in the rear end of member12.

The mechanism 58 is Slidably connected to and about the member 12 ofstructure 59 by a sleeve 88 (Figure 34) which extendsl through member 12and is slidably arranged in the slots 14. The

sleeve 88 is carried by a bolt 89. The sleeve 88` is arranged betweenthe forward end of plunger 18 and piston head 88. The hand grip 6I isformed transversely. thereof with a pair of inner endwise alignedoppositely extending openings '99, 9i which communicate at their innerends with the opening 68. The bolt 89 is positioned in and spaced fromthe wall of the openings 90,

9i as well as extending through member 12. Fixed inthe outer portion ofthe opening 9| is a spacing ferl'ule 92 for the head of the bolt 89. Thehead of the latteris countersunk in the ferrule 92. The outer end ofopening 98 has arranged therein a combined spacing and retaining nut 93for and which has threaded engagement with bolt 89.

The gun includes a horizontally disposed breech block element 94(Figures 3, 5, 8, and 9) Slidably mounted in and of less length thancarrier I. 'Ihe element`94 consists of an integral casting or body part95 provided at the forward ends of its sides with oppositely extendinglaterally disposed arms 96 (Figures 5 and 10) formed respectively withnecks 91 which extend through and are slidably mounted in the passages2|, 22 and with annular outer or head parts 98 which extend into theopenings I9, 20 and encompassand are slidably mounted on the members 28,29 (Figure 5). -That body part 95, other than the arms 96 is arrangedbetween the side parts I1, I8 of the carrier I. 'I'he annular outerparts 98 have xed thereto, on their vertical diametric centers,combined-abutment and coupling pins 99 which pass through the slots 33of the `tubular portions of members 28, 29. The pins 99 provide for theslidably connecting of the element 94 to the member-28, 29, as well asconstitute abutments for the rear ends of the rods 65, 66 when they areshifted rearwardly ,to move'element 944 in a like direction. The pins 99also coact with the forward and rear walls of the slots 33 to constitutestops for the element 94.

The body part 95 of element 94 is formed with a chamber in which isslidably mounted a combined spring and inertia actuated cartridge firingelement |0I'to be referred to. 'I'he chamber |00 is open'at its rear.The bottom |02 (Figure 9) of the 4chamber |00 is formed with a centrally disposed slot |03 lengthwise thereof. The slot' |03 is of lesslength than and opens at the rear end of bottom |02. of the top |04 ofbody part 95 has formed in its upper face and at its lengthwise center agroove |05 (Figure 9) and communicating with the latvprovided with anaxial opening-'I I I for a purpose to be referred to. The opening flaresfrom its forward to its rear end.

The element |0I (Figures 3, 5, 8, 17 and 18) includes a hammer I I2formed of an intermediate solid portion I|3 of circular cross sectionand uniform diameter which-merges at its forward end into a solidtapered forwardly directed portion and at its -rear end into the forwardendof a tubular rear portion I|4I open at its rear end. The portion II4,in cross section is of acontour greater than a half circle andless thana complete ,circle and having the circular portion of its outerperiphery throughout up'on a radius corresponding .to that of theIperiphery of the part I3.

.'.The rear part of the lower l(face of portion I|4 is lengthwisebeveled as at ||4a to form a fiat inclined surface terminating at therear-end of portion I 4. The bevelv I |4aextends upwardly fro'm' itsforward end to the rear end of portion II4. There isinte'gral with therear end of the said inclined surfacev a depending `keeper ,H5 havingits rear face -flush with the rear surface of the portion I-I4. Thekeeper I|5 is disposed centrally with respect to the rear end of thesaid inclined surface and conned withinthe perimeter of the portionsII3, II4.- The keeper |I5 'which associates with a sear or nose carriedby a hammer latching member I I6 to be referred to for latching theelement I0| in its initial po'sition as shown in Figure 9. Arrangedwithin the part ||4 and extending rearwardly from the hammer ||2 is the.compression recoil and actuating The forward portion The..

element includes a post |2| formed above its lower end with a forwardlyextending tapered rest |22. The rear side of post 20 is beveledforwardly from its transverse median to its lower end as at |23 toprovide a clearance for a purpose to be referred to. The post I2| nearits upper end has an opening |24. 'Ihe post |2| extends into a squarepocket |25 (Figure 3) formed in the upper portion of the rear end ofbody part 95 of element 94 (Figure 3). The post |2| is xedly secured bya stud |26 (Figure 3) which extends through opening |24 and is anchoredin body part 95. The element |20 is arranged in the open rear end ofelement 94. The tapered r'est |22 extends into the rear terminal portionof the spring |I1. The keeper is arranged below the post |2I. l

The gun includes a lock-block element |21 (Figures 3, '1, 11, 12 and.13) arranged rrearwardly of the element 94, positioned and slidablyengaging inthe side lparts I1, I8 of carrier The element |21 includes ahorizontally disposed body part |28 having its upper face |29 incliningupwardly from its rear end |30 to its forward end |3|. The lower face|32 of body part |28 is flat. The forward end |3| of body part |28 isoppositely inclined. Formed integral with the rear end |30 of body. part|28 is a pair of rearwardly extending parallel apertured arms I 33 forpositioning at the sides of the apertured horizontal leg 4| of lug 40.|Phe arms l|33 are pivotally connected with the leg 4I by a pivot pin|34 (Figure 3). 'Ihe forward portion of the `body part |28 is bifurcatedas at |35 t form a pair of spaced parallel arms |36. Arrangedbetween andextended fiom the forward ends of the arms |36 is the latching member|I6 consisting of a substantially oblong shank |31 having its rearportion bifurcatedl as at.|38 to form a pair of spaced parallel reararms |39 provided with aligning openings |40. The shank |31 has theforwardv end of its upper face formed with an integral `sear or nose |4|spaced from its side edges |42 and flush with the forward end edge |43of the shank. The sear or nose I4| is substantially of triangularcontour with itsv front edge |44 inclined inwardly from its bottom toits top. The

arms |39 are mounted on a pivot bar |45 which is anchored in anddisposti transversely of body part |21 near the lower face |32 of thelatter. The arms |36 having the lower portions of their inner side facesprovided with flang s |46 (Figure 12) which act as stops to arrest tarms |39 shifting lengthwise of pivot bar |45. Mounted on the barbetween the arms |39^is a coiled controlling spring I 41 for thelatching member ||6. The spring |41 functions to normally hold the searor nose |4| in the path .if keeper II5. v'I'he end |48rof the spring |41.is extended and seats in a groove |49 (Figures 3 andvll) formed in thelower face of the'shank |31. 'I'he other end |50 of spring |41 is-extended and seats in a groove |5| (Figures-3 andll') formed in thelower lface |32 of body part |21.

spring ||1 for initially operating element |0I. proximity to its rearend has its sides formed with The latter in curved laterally disposedguides |52 (Figure 11) which are slidably disposed in curved guidechannels |53 (Figure 5) formed in the inner face |89' of the parts l1,|8.

Surrounding the members 28, 29 and interposed between the arms 96 ofelement 99 and the bridgeY`V element 34 are recoil compression andbridgeblock element actuating springs |54.

The shell extractor element |01 (Figures 4, 9 and 16) is in the form ofa lever |55 of greater length than that of the groove |05 in which it ispositioned. The lower face of lever |55 between its transverse medianand rear `end is formed with a depending apertured lug |56 arranged inopening |06 and mounted on a pivot |51 anchored to body part 95 ofelement 94. Element |01 is bodily carried with element 94. The rear endportion |58 of lever |55 is of reduced thickness and bears on acontrolling spring |59 wlii'cHis mounted in pocket |08. The forward endof lever 55 has a depending nose or hook |60 for engagement with theflange |6| at the rear end of the shell |62 of the cartridge |63 whenthe latter is in the firing chamber |64, formed by the portion 55 ofgreatest inner diameter of the stretch 50 of barrel 46. The forward endof element |01 is oppositely beveled. The bevel part 51 of the wall ofthe opening in the front of carrier provides a clearance for the forwardend of element |01 when the latter is shifted to shell engagingposition.

The stock structure 60 is of the extension type "`'\`\and ofangularcontour. The structure 60 includ'es a hollow body part |65and a head|66, the former merging at`its`forward endinto the latter. The body partmay be of the form as shown by Letters Patent No. 2,066,361, granted tome January 5', 1937, or of the form as embodied in my co-pendingapplication, Serial No. 112,160, filed November 21, 1936. Patent No..2,114,311. The body part |65 providesqanelongated cartridge magazine |61opening into the he'ad"| 66. A cart'ridge guide |61al is arranged in themagazine |61. The body part |65 is formed of an inner section |68 offrame-like contour and a pair of side sectional cheeks |69. Thestructure 60 carries a driven cartridge feeding mechanism which will beof the same form as that disclosed by the patent aforesaid or as thatembodied in my copending application referred to. The cartridge feedingmechanism is indicated at |10.

The head |66 (best shown in Figures l and 36 to 40) is integral with theupper portions of the front, rear and side edges of the section |68 ofbody part |65 and extends upwardly, forwardly and rearwardly withrespect to the forward end of body part |65, The head |66 has itsrearwardly extending portlon'of greater length than its forwardlyextending portion. The head |66 includes a pair of oppositely disposedside portions |1|, |12 ofplike form and each of which is formed of anupper horizontal part |13 provided on its inner face in proximity to itstop. with an' inwardly opening channel |13a corresponding in lengththereto. Arranged between and integral with the inner faces of the parts|13 are the lower horizontal parts |14 of the side portions |1I, |12.'I'he parts |14 depend from and are inset relative to the 4parts |13.Each of the parts |14 is formed of a forward stretch |15, anintermediate stretch |16 and a rear stretch |11'. The outer side face ofstretch |15 is inset with respect to the outer side faces of thestretches |16, |11. The stretch |15 is of less height than stretch |16.

stretch 11 is of less length than that of' either of thestretches|15,|16 and gradually de creases in height from stretch |16.The latter is incut at its bottom to form a pair of straight spacedparalleledge portions |18,.|18Pf.a11d a pair ofY arcuate edge'portions|19 arranged above the'v edge portions |18, |109. The rear ends of thestretches |11 have aligned openings |80.

The rear'ends of stretches |15 and the forward ends of the stretches |16are integral with a bridge-piece |8| having oppositelyvcurved sides |82,|83. The inner sides of the stretches |15 are formed with ledges |83abelow the vtop of bridge piece |8| and which extend from the side |82 ofthe latter to the forward ends of stretches |15. These latter have theirinner sides below the ledges |839 oppositely curved. The lower ends ofthe stretches |15 at their forward portions merge/into cunningham/inConnegtllnhwith sides form the the curved portions of their inner socket81 (Figure'). Formed integral with the forward ends of the stretches 15at their bottoms is one end of a curved arm |84. The latter has itsother end integral with the front edge of the inner section |68 of thebody part |65 of the stock. The inner face of arm |84 is grooved as at|86a for a portion of its length. The upper end of the groove |69 opensinto the space |84b formed between the stretches |15. The arm |84 inconnection with the stretches |15 constitutes a guard for a shiftabletrigger element l|85-Which will be presently referred to. 'The groove|69 and space |84b form a clearance for element |85 vide for the initialring'and, continuous automatic ring of the gun. The inner sides ofstretches |16 are connected together by a lower bridge piece |86whichisintegral' therewithandV arranged below the bridge piece |8|. Thebridge piece |86 is formed with oppositely disposed me sides-andlis`oflless width than that of The` rear .side of ,Y bridgewnw/ the bridgepiece |8|. piece |86 is arranged rearwardly of the rear side of bridgepiece |8|. The bridge`pieces |8I, |86 are so formed and coact to providea passage |86a therebetween. The bridge piece |86 at its lower end isflush with the lower edge parts of the sidev portions |'1|, |12 of head|66. The tops of the stretches |15 provide spaced parallel abutments orledges |81. The tops |88 of the stretches |16 are spaced apart and areof less width and of greater length than the tops of the stretches |15.

The upper surfaces of tops v| 88 of the stretches |16 are downwardlyinclined at their rear terminal portions, as at |89. The rear terminalportions of the tops |88 of the stretches |16 are tapered as at |90. Therear side |9|y of thesection |68 of body part |65 extends above thefront side |9| of section |68 to between and is integral with the innerfaces of side portions |1|, |12. The upper end portion of said rear side|9| of body part section |68 is laterally enlarged and spaced below thetop of the head |66. The upper end of said rear side |9| of body partsection 1 channels on Ythe inner faces of the side portions f wisethereof which constitute clearances and Vhave their tops flush with thebottom of the ually increase in height from their, outer to their head|66'. The element 2|| includesa horizon- 5 gvinnernendselowie surfaces|9!, the inner tally disposed lower part 2|! having an upstandfaces ofthefstretches |11 are frmedwwith oppoing portion 2|5 at therwad'portiofits'top.

sitely upstanding beveled shouldersV |95 which'"'I'he"front.endf21i ofpart 2|! is of convex curvamerge at their upper ends into ledges |96positure. The upper portion of said end 2|6 has a tioned at the bottomsof the surfacesl |9!. 'I'he U-shaped recess 2|1. The end 2|6 below andin 10 ledges |96 incline vupwardly from their inner to proximity to thebottom of the recess 2|1 is their outer ends. The outer ends of thesurfaces*formada-withY'a transverse groove 2|8. The top I9! andthe'ledges |96 are flush-with the rear 2|9 of the portion 2| 5 inclinesslightly downwards ends ofthe stretches. |11. The inner faces of thefrom rear to front'. 'I'he part 2|! is formed with side portions |12 ofthe head |66 are formed a pocket 228 forwardly of its vertical median 15with lower inset parts |91 `which extend from which opens at the bottomof part 2|!. The latter the lower bridge piece |86 to the bottoms of theis formed with anvr opening 22| lengthwise thereof shoulders |95; Thetop of the inset parts |91 which establishes communication betweengroove are flush with the upper face of bridge piece |86 2|8 and pocket228. The part 2|! is provided ndwith therupperend of the side |9| ofthewith a lengthwise bore 222 which leads from 20 sectio`l'68 of body part'|65. Y pockegt22r8to the rear end of part 2|!. The bore 'I'he carrier isconnected to the head |66 by 222 is of materially greater diameter thanthat of the interengagement of the flanges 23, 2! with opening 22| andhas the maior part 228 vof its the channels |18* (Figure 10) forward endopening into pocket 228. The other The trigger element |85 (Figure 15)Vincludes a part of the forward end of bore 222 is closed as at 25.forwardly curved upstanding finger engaging part 224. The element 2'||is formed with a socket 226 |98 having a rectangular iiatjtop |99 withwhich arranged within part 2|! and the upstanding por; is formedintegral the lower lengthwise edge of a tion 2|5. The socket 225 opensat its forward vertical narrow rectangular stem 288 centrally end intothe lower part of recess 2|1. Formed thereof. 'I'he upper lengthwiseedge of the stem integral with the sides of the top'of portion 2|6 30288 merges into the flat lower face of a cap piece arev the rearportions of the lower lengthwise VY28| .of a length and width to coactwith the top edges of a pair of forwardly extending spaced |99 and stem288 to provide the upper part of parallel arms 228 of like form andlength. Seelement |85 with a pair of oppositely disposed cured with theinner facesof the arms 228, below grooves 282, 288. 'I'he cap piece 28|is of a segthe upper lengthwise edges and rearwardly of thans,W fr fmental contour in transverse cross section. 'I'here forward end edges ofsaid sisarrinveted is associated with and rearwardly shifted bytheU-shaped m having its sides formed t |85 a pusher element 26! (Fi forear extensions 238 to provide ledges below rel n asing thea com ii`d`ring pin and hammerl the top edges of arms 228. The top edges of theelement |8| to initially start firing. The element extensions 238 areflush with the upper face of 40 n2li! is maintained in its shiftedposition .by a conthe top of member 229. The latter is disposed intinuous application of manually applied pressure forward relation withrespect to the portion 2|5 to element |85 to provide for the, continuousautoand; has the inner faces of the sides thereof form matic operationof the gun. The ,element 2li!A elush continations of a part of the sidewalls of includes a semi-ovalshapedgonefpiece'body-part the recess 2|1.The member 229 is spaced from 45 '2" KL2,.8591/1.rameflilre' form havinga forward curved the forward and rear ends of the arms 228. The end.288, a pair of straight sides 281 and a rear extensions 238 have theirrear ends flush with the end 288 ush with the bottom edges of and ofrear ends of the arms 228. The forward end of materially less heightthan that of the sides 281. the top 23| of member 229 has centrallythereof The upperfacevof end 288, centrally thereof is i anupstandinglug 282 constituting a shell reformed with an upstandingsemicircular 1ug'289 jector. 'I'he bottom of part 2|! rearwardly ofconstituting 'a pusher for a purpose to be referred the pocket 228 isgrooved as at 288 for a purpose to. Formed integral with the forwardfaceof to be referred to. The forward portions of the end 286 of bodyp'art 285 is a forwardly extending lower ends of the" arms 228constitute cartridge stem 2-'|8 having itsforward portion bifurcated asdefiectors for tilting the cartridge upwardly and 55 at 2| |l to provideapair of spaced parallel arms directing the cartridge forwardly when itis pass- 2|2'^. 'Ihe arms 2|2 have rounded outer and flat ing from thehead |66 into the loading chamber inner sides. When elements |85 and 28!are A to be referred to.' rIfhe said forward portions of associatedtogether, the arms of element 28! are the arms 228 are positionedbetween and extend arranged in the grooves 2872, 283oifwtheeelementffalzove-thetopsrH8TiithstretcleslST-Thtit |85 and thestem 288 ofelement |86 abuts the base of the `furcation in the stem l2|8of element 28!. The element |85 is disposed in the guard formed bythearm |8!. The stem 2|8 of element 28! is slidably mounted in passage |86.The

body part 285 ofelement 28! is slidably mounted i on the ledges |81.

The'gun includes a normally stationary pivoted |88 of the stretches |16,the upper portion of side |9| of vbody part section |86, the upper andlower bridge pieces. and the stretches |16 coact to form a passage 23!for the travel of a cartridge from the magazine to the carrier forwardlyof the 65 breechblock element 9! on loading. The said lower edges of theforward portions of the arms 228 are arranged in the top of the passage23! in the path of the cartridge.

The gun includes a horizontally shiftable releasing element 285 (Figures1, 9, 2'7 to 30) for the sear or nose on the latching member |6. Theelement 235 is of angle-shaped contour and includes a vertical leg 236and a horizontal leg ally supported. at its rear end on a pivot means231 extending rearwardly from the lower end 75 2|2. The means extendsthrough openings 2|3 'stationary (Figure 3.) against the inner rear endof stem 242.

ammore of the leg 236. The leg 231 is tubular, closed at its forward endand open atits rear end. The leg 236 is arranged in the member 229 andthe recess 2|1. The leg 231 is positioned in thesocket 225. Arrangedwithin and extending from the rear end of leg 231 to the base 238 ofsocket 225 is a coiled controlling spring 229e for element 235 (Figures3 and 9). The leg 236 is positioned in the path of the pusher lug 209formed on the element 204'. 'I'he upper rear corner ofthe leg 236 isbeveled for coacting with the bevelled front of the nose |4| of the searor latching member ||6. The leg 236 may or may not be provided with aninclined notch for the reception of a part of a safety mechanism notshown. The leg 238 is shown as pro- .vided with such notch which isindicated at 238B.

tion, thereby releasing element |0| to provide for the latter becomingactive. The shifting of the sear or latching member ||6 to releasedposition is had against the action of the spring |41. The leg 236 isheld in shifted position by the continuous application of manuallyappliedvpres-- sure to the trigger element to hold the sear clear ofelement |0| whereby the gun will be automatically operated, as long assuch pressure is applied to element |85, for the purpose offiring all ofthe cartridges fed from the magazine.

The gun includes a structure 239 for normally locking the element 2listationary to the stock whereby such element will be held in itscorrelated position With respect` to the parts of the gun with which itis associated. The front 2|6 of element 2| when the latter is in itsstationary position is seated on the groove |92. The structure 239(Figures 3, 31 to 33) includes a locking member 240 formed with alocking head 24| and a stem 242 grooved on each of the sides as at 243,244, to provide a pair of abutments 245, 246. The grooves 243, 244reduce the thickness `of the intermediate part 241 of stem 242. Thebottom edge 248 of part 241 inclinesv downwardly from front to rear. Thelocking head 24| in plan is substantially of semi-circular contour. Thestem 242 is secured to and centrally of the fiat edge 248a of head 24|.The member 240 is arranged in the groove 2|8, opening 22|, pocket 220and extends into the, opening 222. Within the latter is a springcontrolled piston 249 of cup type and an abutment member 250 (Figure 3).The latter includes a head 25 mounted on-the pivot 2|2 and has a roundedouter side. Extending from the inner side of head 25| towards theplunger 249l is a spring rest 252. Mounted in the piston 249 andextending therefrom to the inner side of head 25|, as well asencompassing the rest 252is a coiled controlling spring 253 which actsto normally extend the head 24| of locking member 240 to engage ingroove |93 for locking element 2|| The plunger 249 bears The structure239 includes a`releasing means 253a for the locking member 240 and whichis formed of grooves of the stem 242. The cams 254 are integral with theupper face of the forward end of the latching arm 255. 'Ihe latter has acurved upstanding flange 256a at its rear end for frictionally engagingwith the rear side of the head 25| to latch cams 254 in normal inactiveposi- 5 wrdly, the cams 254 lwillbe shifted to ride against 10 the rearwalls of the grooves in stem 242l whereby the latter will be shiftedrearwardly against the action of spring 253 and move the locking head24| from the groove |92 to release. element 2| I.

The element 2|| when locked also p'rovides 15v means to lock the carrierI to prevent it from moving forwardly relative to the head-of the stockstructure 60, and in this connection, when element 2I'| is in its lockedor elevated position,

it has the edge portions 251 (Figure 21) which 20 f lconstitu-teshoulders abut the oppositely inclined forward end edges |3| of the arms|36 of the element |21. f

The portions of the side parts I1, I8 of the carrier arrangedforwardlyofthe breech block 25 element 94 when the latter is in rearward po-`sition, as shown in` Figure 8, provide the loading i chamber or space258 of the gun. The chamber 258 extends forwardly with respect to-thepassage 234. When the cartridge |63 is fed to the 30 chamber 258forwardly of element 94, the rear end of the cartridge |63 opposes anannular recess 259 formed in the leading end of element 94. As thelatter moves forwardly, it receives the said rear end of the cartridgeand moves the latter 35 forwardly into the firing chamber |64. Whencartridge |63 is in position-to be fired the for,-l ward endv of shellA|62 abuts shoulder 56 and the rearor flanged end |6| of the shell |62is seated in recess 259. The forward face of the ange of 40 'shell |62when seated in recess 259 is flush with the forward face of element 94and overlapped by the nose |60 of element |01. Whn'the'cartridge |63 isin position to be red, the bevelled portion 51 of the wall of opening(|I retains the 45 parts I8, I9 as the breech block element 94 moves 50rearwardly on recoil to the position shown in Figure 8.

The shell rejector232 prevents the cartridge from moving rearwardlyrelative to element 2|4.

. when using the gun initiauy, the wading and 55 firingl is hadmanually, after. which the loading and ring is had automatically.

Initial loading-It will be assumed that the parts supported by thecarrier are in the position shown in Figure f5 and that the cartridge.60- feeding mechanism has 'been released for feeding cartridges fromthe magazine into the loading chamber, after which the grip 6| -is movedrearwardly against the action of the spring controlled structure 59whereby the rods 65 will be 65 moved rearwardly and which in turn,coacting4 with the pins, studs or abutments 99, will carry the 4element94 rearwardly whereby the element |21 (Figure 8) will.be moveddownwardly on its pivot, but at the same time the latching mem- 70 berI6, due to the action o'f its controlling spring will be disposedhorizontally andin a position to permit ofthe keeper I|5 riding over andbeing positioned rearwardly of the sear or nose |4I.

iis the element 94 moves rearwardly the loading 75 thereof and acartridge |63 forced into the chamber or space 258. When element 94moves rearwardly the springs |54 will be compressed, due to the necks 91and heads 18 of the arms 96 forming'parts of element 94. Whenhand grip5| is released the spring 8| will Vmove it forwardly and the springs |54will act to shift element 94 forwardly to impact wall I',of carrier I,and at the same time the cartridge from the loading chamber will beforced into the firing chamber'by element 94 on the forward movement ofthe latter. As element 94 moves forwardly, the keeper II5 of `elementIOI will. engage the flat back of the sear or nose I4 I. The saidengagement of keeper |I5 and sear I4I will arrest the forward movementof element IOI to hold the latter in the position shown in Figure 9thereby compressing the spring |I1. The spring I I1 is employed ferinitially firing the gun when keeper II5'is released.

For initial fring.-After the parts are in the position as shown inFigure A9, the trigger Ielel vment |85 is manually moved rearwardlybythe keeperII5.

'will move the barrel, carrier I and element 94 in .unisonrearwardly toa slight extent and then vapplication of pressure thereto, which inturn,

'is released to provide for its acting to move element IOI forwardly tofire the cartridge.

Automatic firing- During and after the initial firing of the gun, themanually applied pressure is continued on the trigger element I 85,thereby' providing for the maintaining of the element 235 in a positionto hold the sear or nose I4I clear of 'I'he recoil from the initial ringmove the element 94 rearwardly independently of the barrel and carrierI. As element 94 moves rearwardly independently of the barrelv and carfrier I, the loading chamber or space 258 will be formed forwardlythereof and into which a cartridge will `be fed. After the initialfiring', the element `|0I will be at the forward portion of element 94and held in such position by spring II1. As theV element 94 movesrearwardly, the springs |54 will be compressed. At the' limit of therecoil movement of the element 94, the springs |54 will become activecausing the element 94 to quicklygmove forward whereby element 94 willshift the cartridge into the :Ilring chamber and impact againstthe'inner face of the wall I0 of the carrier. The force of the impactwill be such as to create suilicient inertia to provide for the the ingelement contacting with and explodin cartridge in the flringchamber. Thefore manner of automatic firing is carried out until extractor element|01 which is bodily' carried with element 94 and withdrawsthe shellsfrom the firing chamber for discharge from carrier I.

What I claim isz.'

1. In a summachinegun, a lock-block element including adepre'ssibleguided body part pivotally supported at its, rear end and provided witha -spring controlled latching member mounted in,

pivoted to and extending forwardly from the forward end of saidbody-part, said member being 2,167,879 chamber or space 250 will be'formed forwardlyy sear for releasably holding a cartridge ring meansfrom action, and said body part having its sides provided with guidestherefor.

2. In a sub-machine gun of that type including a shiftableflring elementhaving a depending keeper, a lock-block element `including a springcontrolled sear adapted to engage the keeper to arrest movement of thefiring element, the combination of a support, a spring controlledshiftable holding element including a skeleton body part slidablymounted in said support, said holding element including a stem at theforward end and va lug at the rear end of said body part, said lugproviding when said4 holding element is shifted in a rearward directionand held stationary after being so shifted to maintain thesear clear ofthe keeper, and pressure applied means connected to said-stem forshifting said element in said direction and for holding said elementstationary.

3. In a submachine gun, a sear releasing structure comprising a slidablymounted pusher element of -skeleton form havingv a bifurcated stem atits forward end, a pressure applied triggerelement formed with anoppositely grooved cap piece interenga'ging with and suspended from saidstern for shifting the pusher element rearwardly, and a springcontrolled shiftable sear releasing element arranged in the rearwardpath of and shiftable by the rear end of the said pusher element in adirection to release the scar.

4. In a sub-machine gun, a sear releasing structure comprising aslidably mounted pusher element of skeleton form having a bifurcatedstem at its forward end, a pressure applied pusher element formedl withan oppositely grooved cap piece interengaging with and suspended fromsaid stem for shifting the pusher element rearwardly, and `a springcontrolled shiftable sear releasing element arranged in the rearward'path of -and shiftable by the rear end of the said vpusher element in adirection to release the sear, said releasing element being formed of aspring controlled horizontal leg arranged in the path of the rear end ofsaid `pusher element and a vertical leg extending upwardly from theforward end of the horizontal leg and having its upper rear cornerbeveled.

5. In a sub-machine gun, a carrier, a reciproca'tory breech-blockelement mounted therein, a barrel anchored to the carrier,- a-lock-blckelement mounted in and slidably interengaging at the sides thereof withthe carrier, a carriage slidably supporting the breech-block element,said lock-block element being pivoted at its rear end to said carriageand arranged rearwardly of and de'pressed by-said breech-block elementon the movement of thelatter in one direction, a stock Q of the latter,anda cap piece carried by th stem andl coacting with the latter and withsaid top to forma pair of oppositely opening grooves ror receiving-apusher element.

formed at its forward end with an upttandingl 1. In assu-machine gunnapusher element in'- 75 andere cluding a frame-like body part including afront and end wall, a pair of side walls and a rear end wall of lessheight than the other end wall, a biiurcated stem extending forwardlyfrom said front end wall for interengaging with a trigger element and alug on an edge of the rear end wall and arranged between and spaced fromsaid side Walls.

8. In a sub-machine gun, a pivoted combined controlling, connecting andcarrier element including a body part formed intermediate its ends witha pocket having its mouth at the bottom of said body part, the latterbeing provided respectively with a groove in its forward end, an openingfor establishing communication between said groove and pocket, aU-sha'ped recess inits front above said groove, a socket above saidopening communicating with said recess and an elongated openingextending .rearwardly from said pocket, said element including aninverted substantially U-shaped member extended forwardly from the topof said bo'dy part above said recess, and va pair of spaced parallelarms extended forwardlyfrom the top of said member.

9. In a sub-machine gun, a pivoted combined controlling, connecting andcarrier element including a body part formed intermediate its ends witha pocket having its mouth at the bottom of said body part, the latterbeing provided respectively with a groove in its forward end, an openingfor establishing communication between said groove and pocket, aU-shaped-recess in its front above said groove, a socket above saidopening communicating with said recess and an elongated openingextending rearwardly from said' pocket, said element including aninverted substantially U-shaped member extended forwardly from the topof said body part above said recess, a pair of spaced parallel armsextended forwardly from the top of said member, and a spring controlledlocking structure mounted in said groove, openings and pocket andextended from the mouth of the pocket,

10. In a sub-machine gun, a pivoted combined controlling, connecting andcarrier element including a body part formed intermediate its ends witha pocket having its mouth at the bottom of said body part, the latterbeing provided respectively with a groove in its forward end, an openingfor establishing communication between said groove and pocket, c.U-shaped recess in its front above said groove, a socket above saidopening communicating with said recess and an elongated openingextending rearwardly from said pocket, said element including aninverted substantially U-shaped member extended forwardly from the topof said body part above said recess, a pair of spaced parallel armsextended forwardly from the top of said member, a spring controlledlocking structure mounted in said groove, openings and pocket andextended from the mouth of the pocket, and a spring controlled searreleasing element mounted in said recess and socket and disposed belowsaid member.

11; In a sub-machine gun, a horizontally disposed combined recoil andspring actuated reciprocatory breech-block element formed with aperturedarms at its forward end, a carrier in which said element is slidablydisposed, said carrier including a front wall to be impacted by saidelement on its forward travel and being open at its rear end, a bridgepiece slidably mounted in the rear end of the carrier, forwardlyextending spaced parallel guide rods, one arranged at each side of saidelement. said rodsl connected at their rear ends connected to the bridgepiece and extending through the arms of said element, and coiled springsmounted on said rods and interposed between said arms and bridge piece.

12. In a sub-machine gun, a horizontally disposed combined recoil andspring actuated reciprocatory breech-block element formed with aperturedarms at its forward end, a carrier in which said element is slidablydisposed, said carrier including a front wall to be impacted by saidelement on its forward travel and being open at its rear end, a bridgepiece slidably mounted in the rear end of the carrier, forwardlyextending spaced parallel guide rods, one arranged at each side of saidelement, said rods connected at their rear ends connected to the bridgepiece and extending through the arms of said element, coiled springsmounted on said rods and interposed between said arms and bridge piece,a barrel anchored to said carrier, said wall being formed with anopening for receiving the inner end of the barrel, said element whenmoving rearwardly providing for a portion of the carrier to form aloading chamber aligning with the inner end of the barrel for receivinga cartridge tobe shifted into the barrel on the forward movement of saidelement, and an inertia operated firing element carried by thebreech-block element.

13. In a sub-machine gun, a breech-block element, a carrier including abarrel receiving means, a stock including a head at its upper end, saidhead extending forwardly and rearwardly with respect to the upper end ofsaid stock, said carrier extending above and being slidably connected tosaid head, and a combined controlling, connecting and carriage structurearranged within and pivotally connected to said head, said element beingslidably mounted in said structure, said stock' and structure havingcoacting means for locking the structure to the stock.

14. In a sub-machine gun, a horizontally disposed combined recoil andspring actuated relciprocatory breech-block element formed withopportions, slotted lengthwise of said portions and open at theirforward ends, coil springs mounted on said rods between said arms andbridge piece, means for initially loading the gun including shiftableparts extending into said portions and the slots of the latterandslidably connected to said rods, and coil springs within said portionsrearwardly of said parts.

LOUIS NOLAN NOMAR.

